Choose 2 oz amber glass boston round bottles with black child resistant caps when packaging pharmaceuticals, minerals, or chemicals. The amber glass bottles feature sloped shoulders and a narrow neck and offer high durability and UV protection for light sensitive products. These 2 oz glass bottles have an impermeable construction not to alter your ingredients. The universal pictured, child resistant caps paired with these small glass bottles feature PE liners. The liners are composed of a compressible PE foam that creates a stable seal. PE liners ensure low moisture transmission and provide good resistance to acids, alkalis, solvents, alcohol, oil, household cosmetics, and aqueous products.